Apparatus for making master models

ABSTRACT

An apparatus for carrying out the automatic machining of threedimensional lines and surfaces for making a master model comprising three components which are controlled to move in a straight line, including an X-component which has a horizontal longitudinal X-movement, a Y-component which has a vertical Ymovement, and a Z-component which has a horizontal Z-movement at 90* to the X-movement, a tool operatively mounted on one of said components, power means operatively connected to each of said three components for moving the components in said controlled straight line movements, a signaling device for each of two of said components for controlling the power means therefor, a first source of two-dimensional data mounted on one plane, and a second source of two-dimensional data mounted on another plane perpendicular to said one plane, and a sensing element for each of said signaling devices which engages and is responsive to one of said two-dimensional data sources, whereby the power means controlled by the signaling devices cause their respective connected components to move precisely in accordance with the two-dimensional data, thereby producing a three-dimensional relative movement between the tool and the work piece.

ite States Patent 11 1 Vertin ct. W73

[ APPARATUS FOR MAKING MASTER ing of three-dimensional lines and surfaces for making MODELS a master model comprising three components which [76] Inventor: Thomas Vemn 37540 Lake are controlled to move in a straight line, including an Shore Rd ML clgmens Mich X-component which has a horiaontal longitudinal X- 48043 movement, a Y-component when has a vert1cal Y- movement, and a Z-component which has a horizontal [22] Filed: June 17, 1971 Z-movement at 90 to the X-movement, a tool operatively mounted on one of said components, power [21] Appl' 154310 means operatively connected to each of said three Related US. Application Data components for moving the components in said con- [62] Division of Ser. No. 864,650, 0m. 8, 1969, Pat. No. trolled Straight line movements, a Signaling device for 3,640,182. each of two of said components for controlling the power means therefor, a first source of two- [52] us. Cl 90/13 B, 90/62 R im n i n l data m n n one p n a second [51] Int. Cl. B23c 1/16 rce f tw -dimensional ata mounted on nother [58] Field of Search 90/62, 13 R, 13 B; pl n perpe dic ar t a one p and a sensing 33/23 K; 82/14 A; 51/100 R element for each of said signaling devices which engages and is responsive to one of said two-dimensional [56] References Cited data sources, whereby the power means controlled by UNITED STATES PATENTS the signaling devices cause their respective connected 3 570 370 3/1971 Ristau 90/62 components to move precisely in accordance with the 3:121:35 2/1964 two-dimensional data, thereby produclng a three- 3,1o9,222 11/1963 Wiseman 408/199 x dimensimal relative mvemem between the and Primary Examiner-Gil Weidenfeld Attorney-Donnelly, Mentag & Harrington [57] ABSTRACT An apparatus for carrying out the automatic machinthe work piece.

2 Claims, 64 Drawing Figures PATENTED 9W5 3161MB sum 03 F 25 5o 40 3o 0 Q LONGITUDINAL TEMPLATE AT 20"L FIG. 4

I {CUTTER 2O PLANE OF TEMPLATE REAR IO J FRONT 20 VALID SURFACE COMPOSITE CROSS SECTlONS OF TEMPLATE FIGS cRoss SECTIONS SUPERMPOSED AT POINT OF CUT 244 FIG-6 246\ /2/46 246 246 24 .L T. 4. 246 7 I 7 3r z ..J T

243 50 4O 35 3O 25 20 l5 l0 5 O F'IG.34

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PATENIEU 9W5 3.763.743

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PATENTED [113T 9 I975 sum 13 or 25 FIG.25

FIG.24

FIG.28

PATENTEDUET 91915 3.763.743

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FIG 36 PATENTEDUCT 9191s 763 743 sum 15 or 25 FIG.3'7

PATENTED 9 7 sum 15 or 25 PATENTED URI 9 I975 sum 19 or 25 

1. In a machine tool for automatically machining a master model, comprising signalling means being responsive to control data for controlling said automatic machining, a sensing element carried by said signalling means and engageable with said control data, said sensing element including: a. a blade-type stylus having a mounting shank formed on one end thereof for operatively mounting the stylus in said signalling means, and a tip on the other end thereof; and, b. said blade-type stylus having a longitudinally tapered sensing edge which tapers outwardly from the longitudinal axis of the stylus, with the taper increasing toward the tip of the stylus, whereby said stylus may be moved axially while in a deflected operating position and with said tapered sensing edge in contact with the controlling data without activating the signalling means.
 2. In a machine tool as defined in claim 1, wherein: a. said tapered edge is provided with an axially bisected conical contacting surface. 